250+ iOS apps curated and reviewed
Every iPhone needs a few good topology lens apps. We benchmark 250+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | — | No | No | May 2026 | |
| 2 |  | Free | 5.0★ (1) | Yes | No | May 2026 | |
| 3 |  | Free | 5.0★ (5) | No | No | May 2026 | |
| 4 |  | Free | 5.0★ (3) | No | No | Oct 2026 | |
| 5 |  | Free | — | No | No | Sep 2026 | |
| 6 |  | Free | 4.8★ (26) | No | No | Oct 2026 | |
| 7 |  | Free | 4.8★ (41) | No | No | Oct 2026 | |
| 8 |  | Free | — | Yes | Yes | Oct 2026 |
This app serves as a community-driven database for topological counterexamples, theorems, and properties. It allows users to explore detailed descriptions, search for spaces satisfying specific logical formulas, and find references for mathematical concepts.
This app revolutionizes eyewear shopping by using your device's 3D scanning technology to create a precise fit. Virtually try on frames and receive custom-made prescription lenses delivered to your door.
